Over the past few years I have tried out a large selection of white paint pens. Originally I used them for art journalling, but over time, they have become a big part of my paintings on canvas. These two are my favorite...the 2-4mm chisel tip Liquitex Paint Marker (which actually created the lines on the canoe and can be a bit thicker, kind of like a Sharpee) and the Uni-Ball Signo Broad. The Signo needs to be treated rather gently, not pressing too hard on the nib but not too soft on the canvas, either. It does cut out at times, but I like that sketchy appearance (see the cabin above). The white in both is quite opaque, something I have looked long and hard for as many paint pens are rather translucent. I really like the fact that the Liquitex are acrylic paint which are obviously compatible with the Liquitex paint I use. The Signo isn't waterproof which can make interesting marks and patterns when I layer thinned acrylic over it, but does require a protective spray varnish - something I try to avoid using as sprays aren't healthy nor are their containers when it comes to recycling. Are there other favorites out there? Any suggestions are always appreciated.